It is so cold here in Zhengzhou this winter that it seems as if we ______ in Iceland.
| A．are | B．have been | C．were | D．had been |
The Red Cross is an organization _________ purpose includes offering help to victims (受难者) of disasters.
| A．whose | B．that |
C．which | D．where |
My mum would like me to go home early, but I ______ here a bit longer to enjoy myself.
| A．stay | B．have stayed |
| C．stayed | D．am staying |
Don’t waste your words any more; she is as ______ as a mule (骡子) and no one can persuade her.
| A．reliable | B．stubborn |
| C．determined | D．tired |
The child asked his mother ______ go out to play tennis.
| A．that he could | B．if he could |
| C．if could he | D．that could he |
______ the tiger gets angry, it will be extremely dangerous.
| A．Once | B．As |
| C．Since | D．Because |